IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_CAS_PAYMENTBILL_E' AND KSQL_COL_NAME IN ('FPARENTACCT')) 
 ALTER TABLE T_CAS_PAYMENTBILL_E ADD (FPARENTACCT BIGINT DEFAULT 0 NOT NULL );
